Abrasive device



Apr. 24, 1923. 1,452,738

w. J. HOBERG ABRASIVE DEVICE Filed Aug. llf 1922 2 Sheets-Sheet l 2' 5i?" 25 I 120 24 25 m 27 '39 i a L? 2 v A ll'sw s- 5 f7' mi mi 8 40 22 f4 nm, 2! g l I uuml l f 20 'ze 4 EE- L f!! l' l '--vl\ m A\ fr up J4 f 45 fz @s 42 J6 ,l

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f w. J. HCBERG ABRASIVE DEVICE Fued Aug. 11, 1922 2 sheets-shed 2 Patented pr. 24, 1923.

maras orricr ARRAS-Ive n'nvrcn.

Application mea` August 11i, 1922. sriail No. 58u89.

To all whom t may concern.' l

Be it known that I, WILLIAM J. HOBERG, a citizen of the United States, and resident of 68 Lembeck Ave., Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Abrasive Devices, of which the following is a specification.

This invention relates to fruitandvegetable manipulating machines in general, and particularly to the kindv used for abrading the outer skin of fruits or vegetables.

The prime objects of my inventionzare to provide a simple, inexpensive and effective device of this'kind which will effect a tho'rough cleansing of the surface of an article tially parallel to the short center axis of the article are thoroughly cleansed.

4Another object of' my invention is to p rovide a-self adjusting combination cleansing 'and ejecting element, by means` `of which the cleansed article is fed out of the ma.

chi-ne.

A'n'otherobject of my invention is to provide a* driving mechanism, adapted to operate a7- plurality of abrasive elements in opp0- site directions to each other, and als 'operat' ing' the ejecting'eleinent ini aE directionv per-V pendicular'to the operation ofthe abrasive elements.

The foregoing and# further'objects will be'` more fully apparent from the following description and the" accompanying drawinglrs,v

Figure 5 is 'a' detail view of an efccent'rically arranged abrasive 'f element.

Figure 6l is a diagra'inrnaticalviewLv show-V in'g the arrangement of the stationary holding, rotary abrasive, and the ejecting elep cleansed. The housing` is provided at oneX side with bearings 14; in which is rotatably mounted a driving shaft 15 operated either by' means, of a motoror by hand.

Shaft v15 extends into the housing andxat its V inner end there is attached thereto by means*` of a ,keyT a friction wheely 16.

. Slipped over theshaftand bearing against the inner surface f they housing is a stepdown collar'17 adapted` to receive oneend of an expansionspring 18 which bearswith its"` other endl against the wheel`16f, keeping the latter in friction'al engagement with the rotary abrasive elementathe"function-of which will be explained later.

Extending upward from base'y plate' 10,'A

and securely held in tubular extensions 19 and prevented fromy rotation by means of set sc'rews20gisa pluralit-y'of` pins 21. Upon these vpins are mounted lower rollers 22 and upper rollers' 23y adaptedl to freely rotatel thereoni v'Ihefr'ee'ends of the pins" are held togetherbymeans of ay ring-shaped plate '24 provided with perforated lugs 25 which are slipped over the threaded* portion of pins 21 and held down by means of nuts 26. v Attachedfto plate 221 there is'astatio'nary concentric holding member 27', which consist's'fof a ring-shaped frame from which ex# tend; radially towards the center, a plurality o'fbristles 28,'leaving free the central opening-29.

Belbw the stationaryholdng member 27 there is mountedwithin rollers 23 a rotary abrasive element 30`coinposed of an, inner annular frame 31, which is eccentric'ally;`

lodged withintheouter frame of the rotary element, as clearly seenin Fig. 5.

Extending from'the'periphery of the concentric frame 31, is a pluralityof abrasive members or bristles 32 which are s par# ranged asto leave al free circularl opening 33 and are' disposed at a tangent tothe periphery of that central openingT This arrangement of the bristlesv is" very important because ofits function upon the points of the surface of the potato, but will so-to-speak wipe the skin; that means that they will bend and their ends will assume a position opposite to the direction of the rotation of the element.

My construction assures that the bristles, being at a tangent to the periphery of the Lcircular center opening, will so-to-speak dig under the skin of a potato at all points of contact with its surface. In this manner every one of the depressions is effectively reached as the bristles are flexible and follow the contour of the potato surface.

By consulting the drawings it will be seen that below the rotary abrasive element 3() there is provided again a concentrically disposed stationary holding element again consisting of an annular frame 34 and radially disposed bristles 35 leaving again a free circular center opening 36.

This holding element is .attached to a ring-shaped plate v37 from which extend perforated lugs 38, which latter are slipped over the recessed portion 39 of pins 21.

The off set indicated at 40 provides a bearing for rollers 23. Below the stationary element 33 there is again a rotary abrasive element 41 constructed similarly to element 30 having, however, its bristles disposed in opposite direction to that of abrasive element 30.

It will be seen that both abrasive elements have beveled corners 42 which correspond with the beveled edges 43 of rollers 22 and 23, respectively, by means of which these rotary elements are guided in a horizontal lane.

p By rotating shaft 15 friction wheel 16 with its inner face 44 engages the outer cir- Y cumference of both abrasive elements 30 and 41. Assuming that shaft 15 rotates in anti-clockwise direction, upper abrasive member 30 will also move in anti-clockwise direction, while lower abrasive member 41 will move in clockwise direction.

Below the lower abrasive member 41 and yieldingly mounted in any convenient manner is an abrasive delivery brush 45 as clearly seen in Fig. 4. On its shaft 46 there is provided a friction wheel 47 which is held in engagement with the outer surface of friction wheel 16 by mea-ns of a spring. Friction wheel 47, which is caused to rotate in clockwise direction, causes abrasive or delivery element 45 toalso rotate in clockwise direction. The latter serves not only to thoroughly clean the lower end of the article passed through the machine, but also to eject the latter from within the machine after it has been thoroughly cleansed.

The swivel and flexible arrangement of the friction roller 47 and of the delivery element 45 has for its purpose to permit the ejection of articles which are so large that they would not normally pass by the ejecting element.

For the purpose of cleaning my device and to permit the removal of the housing 11 from base 10, it is necessary to disengage friction wheel 16 from the rotary abrasive elements 30 and 41. This is accomplished by moving the shaft 15 in outward direction. In order to enable shaft 15 to be held in its outward position, I have provided in the shaft a hole 48 which is normally disposed within bearing 14 and through which a pin may -be inserted when the shaft is pulled out. The pin prevents spring 18 from propelling shaft 15 in inward direction.

It is obvious that the specific construction shown in my drawings illustrates by no means a mechanically perfect device, and I therefore reserve for myself the right vto make such changes and improvements as will become necessary in constructing a commercially perfect machine.

Having thus describedmy invention, l claim:

1. A machine, comprising a plurality of abrasive elements, including stationary and rotary elements, the latter disposed eccentrically relative to the former.

2. A machine, comprising a plurality of abrasive elements, including stationary holding and rotary working elements, the latter y adapted to engage an object eccentrically while being held concentrically by the stationary elements.

3. A machine, comprising a plurality of abrasive elements, including stationary elements, rotary elements alternating with said Stationary elements and a rotary delivery element.

4. A machine, comprising a plurality of abrasive elements, including concentric stationary and eccentric rotary elements alternating with the former, and a delivery element.

5. A machine, comprising a plurality of abrasive elements, including stationary holding, rotary working and rotary delivery elements, and means for operating said rotary working elements in opposite directions to each other and said rotary delivery element in perpendicular direction to that of the said working elements.

6. A machine, comprising a plurality of abrasive elements, including stationary holding concentric elements, rotary working eccentric elements, and a rotary delivery element disposed perpendicular to said aforementioned elements, and means for simultaneously operating said Working elements in opposite direction to each other and said delivery element in perpendicular direction to that of said Working elements.

l 7. In a machine of the class described, a plurality of abrasive elements including stationary holding, rotary Working and rotary delivery elements, driving means for said rotary elements, and means for permitting said delivery element to automatically adjust itself when thrown out,of alignment.

8. In a machine of the class described, a rotary abrasive element having a plurality of abrasive members, extending from its periphery toward a free central circle but disposed at a tangent tothe periphery 'of said central circle.

9. In a machine of the class described, a rotary abrasive element having a plurality of abrasive members of equal length reaching` from its periphery ytoward its center, leaving a free circular central opening, and disposed at a tangent to the periphery of said circular opening.

10. A machine of the class described, comprising a pair of stationary abrasive elements, a pair of eccentric rotary abrasive elements alternately arranged With said stationary elements and adapted to rotate in opposite direction to each other, a delivery element adapted to rotate in perpendicular direction to that of the rotary abrasive elements, and a friction drive operating said rotary and delivery elements.

Signed at New York, in the county of Nievv York, and State of New York this 31 day of July A. D. 1922.

WILLIAM J. HOBERG. 

